Question

The United States gave much attention to environmental issues in the 1980s and 1990s. Preservation efforts have included:

care of endangered species
maintenance of lands and parks
purification of the air
all of the above

Answer 1

The correct answer is "all of the above"

Answer 2

Option D. All of the above.

Step-by-step explanation:

The United States gave much attention to environmental issues in the 1980's and 1990's. Preservation efforts have included:

• Care of endangered species: Approved in September of 1980, The Fish and Wildlife Conservation Act authorized governmental assistance to protect endangered species.
• Maintenance of lands and parks: the Alaska National Interest Lands Conservation Act was passed on November 1980 and aimed to protect national parks across the United States.
• Purification of the air: Clean Air Act Amendments of 1990 that set official standards and regulations for factories, businesses and cars in order to protect the quality of the air.